Awl-feeding mechanism for sewing-machines.



L, EL JOHNSON m1. ERIGKSON. AWL FEEDING MECHANISM FOR SEWING MACHINES.

APPLICATION FILED NOV. 14, 1913,

Patentefl M81223, 1915 6 SHEETS-SHEET 1- i'meniars: mfifiiieimmn varfl Erdwam,

Eawm E L. E. JOHNSON & E. ERICKSON. AWL FEEDING MECHANISM FOR SEWING MACHINES.

APPLICATION FILED NOV 14, 1913.

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Patented Mar. 23, 1915.

6 SHEETS-SHEET 3v L. E. JOHNSON & E. ERIGKSON. AWL FEEDING MECHANISM FOR SEWING MACHINES.

APPLICATION FILED NOY.14, 1913 Patented Mar. 23, 1915. s SHEETSSHEET 4.

L. E. JOHNSON & B. ERICKSON. AWL FEEDING MECHANISM FOR SEWING MACHINES.

APPLICATION FILED NOV.14, 1913.

1,133,150. Patented Mar. 23,1915.

6 SHEETSSHEET 5.

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L: E. JOHNSON & E. ERIUKsGN.

AWL FEEDING MEOEANISM FOR SEWING MACHINES.

APPLICATION FILED NOV. 14, H13

1, l 33, 1 50, Patented Mar. 23, 1915.

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LAWRENCE E. JOHNSON, OF WINTHRUP, AND ED'WARD ERICKSON, 0F LYNN, MASSA- CHUSETTS, ASSIGNOBS T0 VICTOR SHOE MACHINERY 30., 0F BOSTON, MASSACHU- SETTS, A. CORPORATION OF MASSACHUSETTS.

AWL-FEEIHNG MECHANISM FOR SEvVING-MACHINES.

Specification of Letters Patent.

Patented Mar. 23 1915.

Original application filed May 19, 191.3, Serial No. 788,671. Divided and this application filed November 14,

To all whom it may concern.-

Be it known that we, LAWRENCE E. JOHN- son, it citizen of the United States of America, "and a resident of -Winthrop, in the county of Sulfolk and State of Massuchw setts, and EDWARD Enrcnsou, a subject of the King of Sweden, and a resident of Lynn, in the county of Essex and State of Mussochusetts, have invented certain new and useful improvements in And-Feeding Mechenisms for Sewinghlachines, of which the following is a specification.

This invention relates to owl feeding mechanisms for shoe sewing machines and has for its object the production of a movable frame supporting the awl and needle in the some vertical plane, so that the entering of the needle into the hole in the WOl'li formed by the owl is always secured pr0- vision also being made to move said frame- .while the owl is in the work, thus feeding the work relatively to the work support.

Another object of said invention is to provide means for regulating the length of feed While the machine is in operation.

The invention consists in certain novel features of construction and arrangement of parts which will be fully understood by reference to the description of the drewings and to the claims hereinafter given.

Of the drawings: Figure 1 represents a plan of a sewing machine embodying the principles of the present invention. Fi 2 represents a Fig. 3 represents an elevation of the right hand end of some. Fig. at represents a vertical section of the some looking to the right, the cutting plane being on line 4 l on l ig. 1. Fig. 5 represents a vertical section of the some, looking to the left, the cutting plane being on line 5-5 on Fig. 1. Fig. 6 represents a sectional detail, the cutting plane being on line 66 on Fig. 3. Fig. 7 represents an elevation of the needle and awl driving members and showing the looper hook and the cam for operating it and Fig.

8 represents an elevation of the left end of machine. I

Similar characters designate like parts throughout the several figures of the drawings.

front elevation of the some.

Serial No. 801,278.

7 in the drawings, 20 is the base of the ma.- cnine adapted to DC secured to n column and borin the end frames 21 and 32 provided with bearings for the revoluble shaft The re\ oluble shaft 23 has the driving wheel 24- secured to one end thereof while to its opposite end is keyed the cam disk Interposed between the side frames 21 and Q2 and keyed to the shaft .ere the cam disks 26 and The com disks 2526-27 are adapted to operate the various mechanisms ne'essary for the proper operation of the machine, all of which have been fully illustrated and described in another applications of ours filed May 19, 1913, and numbered 768,671. Inasmuch as these mechanisms form no part of the present invention they are described only so for as they relate to the owl feeding and needle operating mechanisms to which the present invention is confined. To the inner side of the side frame 21 is secured the work support 28 which may be of any well-known construction. The side frame 21 has also formed upon its inner face a race 30 for the shuttle 31 which is driven in any well-known manner.

The shuttle 31 is provided with a cap 41 pivoted at 42 to the side frame 21, said cap being adapted to be moved about its pivot to permit the removal of the shuttle 31 When it is desired to renew the bobbin.

The frame 22 has rigidly mounted thereon two parallel studs or pins 60, 61, on which mounted a movable frame 62. This frame has pivoted to the lower end thereof at 63 an oscillating slotted lever 6'1 the lower end of which is provided with a roller 65extending into a cam path 66 in the periphery of the cam disk 2?.

In the slot 67 of the lever 64 is a fulcrum block 68 pivotally mounted in a forked member 69 having a shank 70 extending through a straight slot 71 in the frame and also through :1 slot 7:2 in it hand lever 73 pivoted at 74 to the end frame 22. That portion of the shank that travels in the slot 71 is flattened to fit said slot and be guided thereby. The shank 70 is surrounded by washers 75 between which is a spring 55 flange around the slot 71, she friotion there on being sufficient to hold. the lever '43 in adjusted position. spring 55 are retained in position by means of the not 76. It is obvious that when the cam disk 27 rotates, the cam path (36 thereof will operate upon the roller to actuate the lever 6 about its fulcrum thereby moving the frame 62 e given distance, this distance depending upon the position of the fulcrum pin 77. The inclination of the slot 71 con-forms to that of. the lever 64 to permit the free movement of the forked member 69 out binding thereon.

, By means of the handle 73 the position of the fulcrum block (58 may he changed at will to secure any'desired degree of feed. It is obvious that the shank 70 will be moved in the slot 71 during the movement of the hand lever 73 about its pivot 74, and when adjusted the friction on the .lever will be sullicienl; to retain it in this position. When desired the nut 76 may be adjusted so that ,the lever 73 will be immovably clamped against the wall of the side frame 22 and thereby positively locked so that n continnously uniform feed of the Work will he obtained. The frame 62 has a long bearing formed therein in which is mounted the shaft 80, having pinned to its outer end a collar 81 rovided with an ear ESP-between which an a pin on the upper end of the frame 62 is interposed a spring 82 adapted normally to retain the needle guide 83 secured to the opposite end of the shaft, in proper relesive'position to the needle 84 carried by the needle support 85Q'1he guide 83 is nornzslly osirione'd by the pin 833 in the hub thereo bearing against a wall of said needle support 85, said pin being remained in this contacting position by the spring 82, he needle guide 83 is provided with a sloi; 83 at its outer end which retains the oil therein and serves as a means for lubricating the needle us it moves through said guide in eiiher direction. operating the guide 83 is adapted to move with the needle support until the ear 81 on the collar Sl comes into contact with the pin 811, when further movement of the guide 83 will be prevented.

The needle support '85 lies a gear segment iiii -formed thereon and is provided with a tubular Sleeve 86* surrourulinefihofishnft 80 in the long bearing in the i'rame 32 and about theaxis ol whirl: it is :ulaplcd lo be oscillated by the lever 87 haviugrlormed thereon at one end a gear seg'inenl 85 meshing with the gear segment. HG. 'iliu teeth of the gear segment 88 are of suilicient length to permit the troll] ol' the gear segment 2-3 3 So remain eonsiantly in nu-sh (llll'llril the movement of the frame (32 in either direcion. The low" is pivoted at 89 to the The washers '15 and v work supported thereby during, a portion of lengthwise of the lever 64 withtle race 30.

- inclined as When the needle 8i is messes The needle support 85 has also secured tlicrcto the owl llll positioned thereon "so as to enter a slot in the work support 28 and the the oscillation of said needle support, this and being in the some vertical plane with the needle 84-. T'he lever 87 is provided on one side with a ram extension 9:5 adapted to act upon a roller 93 on o boll-crank lever 94 pivoted at 95 to the side frame 2;: beneath the shut- Tlie forward end of the lever ill has secured therein :1 looper hook 96 and a spring 97 is provided to retain the roller 93 in contact with the cam extension at all times.

lhe lever 87 is provided with an upwardly extendingnrm 98 to the upper end of which is pivoted a link 99 the opposite end of. which is articulated to a. loop spreader 100 pivoi'ed at 101 to the hill) 102 formed on the upper end,'of the movable frame 62.

The forward end of the spreader 100 is curved downwardly and rezirwardly as indicated in Fig. 5 and its left hand edge is shown in Fig. 2. This mecha nism provides a simple m ans for spread ing the loop of thread at the proper time for the hook of the shuttle 31 to enter the same.

The loop spreader 100 operates in the same plane with the hook oi the shuttle 31 and when the herb of the needle Bl has drawn the loop of thread through'lihe work the tapered end of said spreader "ill enter be tween the two portions of the i read on vsaid hurl) and spread them apart so that the. slink tie-hook will be sure to enter.

When the needle M has passed the work so that its barbed end below the work support 28 the ioopr 96 will. also he moved downwardly so first when lh'e looper 126* operales the thread Z will not only be planed upon the barb of the needle 84 but it will also he carried around the hook fill so that a given amount. of thread will be. always measured oll'- in be carried through {he Work by the needle Si preparatory in us roacliug with the shuttle in lhe formation of the stitch, 7

As has been slated. the needle 84; and the owl flll are in the same vertical plane rind oscillate about/the smngaxis so that the enluring ol' :lze needle Hi into llic hole i'nvill le '\vorl-: formed by the swl is always assarmi is Lill'ordrd for then} to messes is in the Work the latter may be fed relative to the Work support, the length of feed locing determined by the handle 73, ii". being obvious that by means of the devices controlled by said handle a change in the feed may be obtained at any time While the machine is running. When the needle leaves the Work the frame as is returned to its normal position before the ewl again moves forward to pierce the work.

It will be seen that by the construction shown and described, a very compact awl feeding and needle operating mechanism for sewing machines is provided in which the parts are reduced to a minimum.

The machine is particularly adapted m be used by unskilled labor. such as shoe repairers, although it may be used equally as Wll on new Work.

It is believed that the operation and many advantages of this invention will be liully understood from the foregoing description.

Having thus described our invention, We claim:

1. In a shoe-sewing machine, the combi- 11 ion of an oscillating support provided wifi a ruhular shank formed thereon and revbluhle therewith in a fixed bearing; a needle and awl secured to support and. adapted to alternately pierce the Work; a. shaft extending through said tubular shank;

disk on one end of said shaft provided with a needle guide and. having a member nor mally engaging said support; a member secured to and radiating from the opposite end of said shaft; 21 fixed slop in the path of'said radiating member; and a spring coacting with said radiating member to move said shaft about its axis.

In a shoe-sewing machine, the combination of an oscillating support provided wi l 1 tubular shank formed thereon and revoli le herewith in a fixed hearing; a needl" 111d an awl secured to said support in the vertical plane and adapted r0 alternately pierce the work; needle guide pro- "iih shaft rigidly secured thereto ei-rtsxiding through said tubular shank and adupied in he oscillated therein; pin on the needle guide normallv engaging said suppers; a spring controlled member secured no she opposite end of said shaft; and a stop to limit the movement of said member about the axis of said shaft.

3. in a shoe-sewing machine, the COHlbi, nation of a frame having guide members thereon movable in the frame of the machine and supporting the needle and flWl mechanisms; a fixed work suppers; a l ted lever pivoted to said movable roller in the opposite end of said lever cam roller; a fulcrum member the slot of said lever; a bifurcate membe straddling said lever and to which said fulcrum member is pivoted, said bifurcated member being provided with a shank extending through a slot in a side frame; and a pivoted handle counseled to said shank.

l. in a shoe-sewing machine, the combination of a frame having guide members shereon movable in the frame of the machine and supporting the needle and awl mechanisms; a fixed work support; aslotted lever pivosied to said movable frame; a roller in the opposite end of said lever; a cam for said roller; 2. fulcrum member inthe slot of said lever; a bifurcated member sereddling said lever and to which said fulcrum memher is pivoted, said bifurcated member being provided with a shank extending through a slot-in a side frame; a pivoted handle provided with a slot through which said shank extends; a spring surroundingsaid shank outside of said lever; and a. nut on the outer end of said shank.

In a shoe-sewing machine, the combination of a fixed frame having a straight slot therein; a movable frame thereon supporting the needle and avvl mechanisms and provided with two parallel pins reciprocable in said fixed fra he; a fixed work support; a slotted lever pivoted at one end to the machine frame and at the other end to said movable frame, said lever being in the same plane with said straight slot; a roller in the opposite end of said lever; a cam for said roller; a block slidable in said lever slot; :1. fulcrum pin extending thereihrough, alaifurcatecl member straddling said lever ,,and having said fulcrum pin fixed therein; a shank thereon extending through said stral ghs slot; an. operating handle pivoted to she ame of the machine and through which said shank extends; and means on said shank for retaining said pivoted lever in adjusted position.

6. in a shoe-sewing machine, the combination of a movable frame having two parallel guide members reciprocable in the framework of the machine and provided With a cylindrical hole parallel with guide members; a needle and awl support pro vided with a tubular shank positioned in said cylindrical hole; a needle guide provided with a. stud pcsilzioned in said tubular 115 shank; means for lii Llull lg the movement of said needle guide including in part a disk secured to the outer end of said stud; means for oscillating said needle and awl support;

a work support; and means for moving said 120 frame laterally relative to said Work sup port.

'7. in a shoe-sewing machine, the combi nation of a movable frame having two parallei guide members reciprocable in the 125 fraaiieivork of the machine and provided with a cylindrical hole parallel vviih said guide members; a needle and avvl support provided with a tubular shank positioned in said cylindrical hole; a needle guide pro- 130 moupted. on sammswm relafiive in said Work support. I

Signed by 11 at Boston, Mass, f-is'22nd dayof-October, 1913. I

LAWREIICE E. JOHNSON. EDWARD ERICKSQN. W'itiaesses; i

YJALTER E. LOMBARQ' NATHAN b. Lemmas.

and mains for naming said framg latgrally' 10 

